:root{
  --primary:#2563EB; --primary-d:#1D4ED8; --primary-l:#EFF4FF;
  --ok:#16A34A; --warn:#D97706; --danger:#DC2626;
  --t1:#0F172A; --t2:#475569; --t3:#94A3B8;
  --line:#E2E8F0; --bg:#FFFFFF; --soft:#F8FAFC;
  --radius:12px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:"Microsoft YaHei UI","Microsoft YaHei","Segoe UI",system-ui,sans-serif;
  color:var(--t1);background:var(--bg);line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-d)}
img{max-width:100%}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}

.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;height:60px;gap:24px}
.logo{font-weight:700;font-size:16px;color:var(--t1);letter-spacing:.3px}
.logo span{color:var(--primary)}
.nav .links{display:flex;gap:22px;margin-left:auto;font-size:14px;color:var(--t2)}
.nav .links a:hover{color:var(--primary)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:44px;padding:0 22px;border-radius:10px;font-size:14.5px;font-weight:500;
  border:1px solid var(--line);background:#fff;color:var(--t1);cursor:pointer;transition:.15s;
}
.btn:hover{border-color:#CBD5E1;transform:translateY(-1px)}
.btn.pri{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(37,99,235,.25)}
.btn.pri:hover{background:var(--primary-d);border-color:var(--primary-d)}
.btn.lg{height:50px;padding:0 30px;font-size:15.5px}
.btn.ghost{background:transparent}

.hero{padding:clamp(56px,5.5vw,96px) 0 clamp(44px,4.5vw,72px);background:linear-gradient(180deg,#F6F9FF 0%,#FFFFFF 100%)}
.hero-in{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(36px,4vw,72px);align-items:center}
.hero h1{font-size:clamp(30px,3.2vw,56px);line-height:1.22;letter-spacing:-.8px;font-weight:700}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero .sub{margin-top:18px;font-size:clamp(15px,1.1vw,17.5px);color:var(--t2);max-width:34em}
.hero .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.hero .tags span{font-size:12.5px;color:var(--t2);background:var(--soft);border:1px solid var(--line);border-radius:99px;padding:4px 12px}
.hero .acts{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.hero .note{margin-top:14px;font-size:12.5px;color:var(--t3)}

.mock{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 20px 50px -18px rgba(15,23,42,.22);overflow:hidden}
.mock .bar{height:36px;background:#F8FAFC;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:6px;padding:0 12px}
.mock .bar i{width:9px;height:9px;border-radius:50%;background:#E2E8F0}
.mock .bar span{font-size:11.5px;color:var(--t3);margin-left:8px}
.mock .body{padding:14px;display:grid;grid-template-columns:96px 1fr;gap:12px}
.mock .side{font-size:10.5px;color:var(--t3);display:flex;flex-direction:column;gap:5px}
.mock .side b{font-weight:400;background:var(--primary-l);color:var(--primary-d);border-radius:5px;padding:4px 6px;font-size:10.5px}
.mock .side em{font-style:normal;padding:4px 6px}
.mock .flow{display:flex;flex-direction:column;gap:8px}
.mock .fitem{display:flex;align-items:center;gap:8px;font-size:11.5px;color:var(--t2);border:1px solid var(--line);border-radius:7px;padding:8px 10px;background:#fff}
.mock .fitem .dot{width:6px;height:6px;border-radius:50%;background:var(--ok);flex:0 0 6px}
.mock .fitem .dot.w{background:var(--warn)}
.mock .fitem .dot.g{background:#CBD5E1}
.mock .prog{height:5px;background:#EEF2F7;border-radius:3px;overflow:hidden;margin-top:4px}
.mock .prog i{display:block;height:100%;width:62%;background:var(--primary);border-radius:3px}

.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--soft)}
.trust .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;padding:18px 20px}
.trust div{font-size:13.5px;color:var(--t2);display:flex;align-items:center;gap:8px}
.trust b{color:var(--t1);font-weight:600}

.section{padding:clamp(48px,4.4vw,84px) 0}
.section.soft{background:var(--soft)}
.section-h{text-align:center;margin-bottom:clamp(28px,2.6vw,44px)}
.section-h h2{font-size:clamp(22px,1.9vw,32px);letter-spacing:-.4px}
.section-h p{margin-top:10px;color:var(--t2);font-size:15px}

.formats{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}
.formats span{
  font-size:13px;font-weight:500;color:var(--t2);background:#fff;border:1px solid var(--line);
  border-radius:8px;padding:8px 16px;letter-spacing:.5px;
}
.formats span.on{background:var(--primary-l);border-color:#BFD3FF;color:var(--primary-d)}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px}
.step .n{width:30px;height:30px;border-radius:9px;background:var(--primary-l);color:var(--primary-d);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;margin-bottom:14px}
.step h3{font-size:15.5px;margin-bottom:6px}
.step p{font-size:13.5px;color:var(--t2);line-height:1.7}

.feats{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.feat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.feat h3{font-size:16px;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.feat h3 i{width:8px;height:8px;border-radius:2px;background:var(--primary);flex:0 0 8px}
.feat p{font-size:13.5px;color:var(--t2);line-height:1.75}
.feat ul{margin-top:12px;padding-left:0;list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.feat ul li{font-size:12px;color:var(--t2);background:var(--soft);border-radius:6px;padding:3px 9px}

.cmp{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.cmp th,.cmp td{padding:14px 18px;font-size:14px;text-align:left;border-bottom:1px solid var(--line)}
.cmp th{background:var(--soft);font-weight:600;font-size:13px;color:var(--t2)}
.cmp th:first-child,.cmp td:first-child{color:var(--t2);font-size:13.5px;width:26%}
.cmp td.us{background:#F5F9FF;color:var(--t1);font-weight:500}
.cmp tr:last-child td{border-bottom:0}
.cmp .yes{color:var(--ok);font-weight:600}
.cmp .no{color:var(--t3)}

.faq-list{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:10px;margin-bottom:10px;overflow:hidden}
.faq-q{padding:16px 20px;font-size:14.5px;font-weight:500;cursor:pointer;display:flex;justify-content:space-between;gap:12px}
.faq-q::after{content:"+";color:var(--t3);font-weight:400;font-size:18px;line-height:1}
.faq-item.on .faq-q::after{content:"−"}
.faq-a{display:none;padding:0 20px 16px;font-size:13.5px;color:var(--t2);line-height:1.8}
.faq-item.on .faq-a{display:block}

.foot{border-top:1px solid var(--line);padding:32px 0;background:var(--soft)}
.foot .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;font-size:13px;color:var(--t3)}
.foot a{color:var(--t2);margin-right:18px}
.foot .visit-stat{font-size:12px;color:var(--t3)}

.page{padding:48px 0 72px}
.page h1{font-size:clamp(24px,2vw,32px);margin-bottom:8px;letter-spacing:-.4px}
.page .lead{color:var(--t2);font-size:15px;margin-bottom:32px}
.prose{max-width:800px;font-size:14.5px;line-height:1.9;color:var(--t1)}
.prose h2{font-size:18px;margin:30px 0 12px}
.prose h3{font-size:15.5px;margin:22px 0 8px}
.prose p{margin-bottom:12px;color:var(--t2)}
.prose ul,.prose ol{margin:0 0 14px 22px;color:var(--t2)}
.prose li{margin-bottom:6px}
.prose strong{color:var(--t1)}
.prose code{background:var(--soft);border:1px solid var(--line);border-radius:4px;padding:1px 6px;font-size:13px}

.form-card{max-width:520px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--t2);margin-bottom:6px}
.inp{width:100%;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:9px;font-size:14.5px;font-family:inherit}
.inp:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.inp.mono{font-family:Consolas,Monaco,monospace;letter-spacing:1.5px;text-transform:uppercase}
.cap{display:flex;gap:10px}
.cap .inp{flex:1}
.cap img{height:44px;border-radius:9px;border:1px solid var(--line);cursor:pointer}
.err{color:var(--danger);font-size:13px;margin-bottom:12px;min-height:20px}

.result{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;margin-top:24px}
.result .hd{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:600;margin-bottom:18px}
.result .badge{font-size:12px;font-weight:500;padding:3px 10px;border-radius:99px}
.result .badge.ok{background:#ECFDF5;color:#047857}
.result .badge.warn{background:#FFFBEB;color:#B45309}
.result .badge.red{background:#FEF2F2;color:#B91C1C}
.result dl{display:grid;grid-template-columns:120px 1fr;gap:10px 16px;font-size:14px}
.result dt{color:var(--t2)}
.result dd{color:var(--t1);font-weight:500;word-break:break-all}
.result .tip{margin-top:18px;padding:12px 14px;background:var(--soft);border-radius:9px;font-size:13px;color:var(--t2);line-height:1.75}

@media(max-width:900px){
  .hero{padding:44px 0 36px}
  .hero-in{grid-template-columns:1fr;gap:32px}
  .hero h1{font-size:29px}
  .mock{order:-1}
  .steps{grid-template-columns:1fr 1fr}
  .feats{grid-template-columns:1fr}
  .nav .links{display:none}
  .section{padding:44px 0}
  .section-h h2{font-size:22px}
  .cmp th,.cmp td{padding:11px 12px;font-size:12.5px}
}

@media(min-width:1100px){
  .feats{grid-template-columns:repeat(3,1fr)}
}
@media(min-width:1280px){
  .wrap{max-width:1240px}
}
@media(min-width:1440px){
  .wrap{max-width:1360px}
  .hero-in{grid-template-columns:1.06fr .94fr}
}
@media(min-width:1680px){
  .wrap{max-width:1520px}
  .mock .body{grid-template-columns:120px 1fr;gap:16px}
  .mock{padding:6px}
}
@media(min-width:1920px){
  .wrap{max-width:1680px}
}

.nav-mobile{display:flex;margin-left:auto;width:40px;height:40px;border:1px solid var(--line);
  border-radius:9px;background:#fff;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px;flex:0 0 40px}
.nav-mobile i{display:block;width:17px;height:1.8px;background:var(--t1);border-radius:2px;transition:.2s}
.nav-mobile.on i:nth-child(1){transform:translateY(5.8px) rotate(45deg)}
.nav-mobile.on i:nth-child(2){opacity:0}
.nav-mobile.on i:nth-child(3){transform:translateY(-5.8px) rotate(-45deg)}
.nav-drawer{display:none;position:absolute;left:0;right:0;top:60px;background:#fff;
  border-bottom:1px solid var(--line);box-shadow:0 14px 30px -14px rgba(15,23,42,.18);padding:10px 0 16px}
.nav-drawer.on{display:block}
.nav-drawer a{display:block;padding:12px 24px;font-size:15px;color:var(--t1);border-bottom:1px solid #F1F5F9}
.nav-drawer a:last-child{border-bottom:0}
.nav-drawer .btn{margin:12px 24px 0;width:calc(100% - 48px)}

.scenes{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.scene{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px}
.scene .ic{width:36px;height:36px;border-radius:10px;background:var(--primary-l);color:var(--primary-d);
  display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:14px;font-weight:700}
.scene h3{font-size:15.5px;margin-bottom:8px}
.scene p{font-size:13.5px;color:var(--t2);line-height:1.75}
.scene ul{margin:12px 0 0;padding:0;list-style:none}
.scene li{font-size:13px;color:var(--t2);padding-left:16px;position:relative;margin-bottom:5px}
.scene li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:#BFD3FF}

.cta-band{background:linear-gradient(135deg,#1D4ED8,#2563EB);color:#fff;padding:clamp(40px,4vw,64px) 0}
.cta-band h2{font-size:clamp(22px,2vw,30px);letter-spacing:-.4px}
.cta-band p{color:#DBEAFE;margin-top:10px;font-size:15px}
.cta-band .btn{background:#fff;border-color:#fff;color:var(--primary-d)}
.cta-band .btn:hover{background:#F1F5F9}
.cta-band .btn.line{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.cta-band .btn.line:hover{background:rgba(255,255,255,.12)}

.foot-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr;gap:28px;padding-bottom:26px;border-bottom:1px solid var(--line)}
.foot-brand .logo{display:inline-block;margin-bottom:10px}
.foot-brand p{font-size:13px;color:var(--t3);line-height:1.8;max-width:24em}
.foot-col h4{font-size:13px;color:var(--t1);font-weight:600;margin-bottom:12px}
.foot-col a{display:block;font-size:13px;color:var(--t2);margin-bottom:9px;margin-right:0}
.foot-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding-top:20px;font-size:12.5px;color:var(--t3)}
.foot-bottom .visit-stat{font-size:12px}

.hero-in > *{min-width:0}
.mock{min-width:0;max-width:100%;overflow:hidden}
.mock .body{min-width:0}
.mock .side{min-width:0;overflow:hidden}
.mock .flow{min-width:0}
.mock .fitem{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.trust .wrap{row-gap:12px}
.hero .tags span{white-space:nowrap}
@media(max-width:900px){
  html,body{overflow-x:hidden}
  .nav .links{display:none}
  .nav-mobile{display:flex}
  .nav > .wrap{gap:12px}
  .nav .btn.pri{display:none}
  .scenes{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:22px}
  .cta-band .btn{width:100%}
  
  .mock{order:0;margin-top:8px}
  .hero .acts .btn{flex:1 1 auto}
}
@media(min-width:901px){
  .nav-drawer{display:none !important}
  .nav-mobile{display:none}
}

.dl-hero{padding:clamp(32px,3vw,48px) 0 8px}
.dl-hero h1{font-size:clamp(26px,2.4vw,36px);letter-spacing:-.6px}
.dl-hero .lead{color:var(--t2);font-size:15px;margin-top:10px}
.dl-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 26px 24px;
  box-shadow:0 16px 40px -26px rgba(15,23,42,.28);margin-top:26px}
.dl-top{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.dl-name{font-size:19px;font-weight:600}
.dl-meta{font-size:13px;color:var(--t3);margin-top:7px;display:flex;flex-wrap:wrap;gap:6px 14px}
.dl-meta span{display:inline-flex;align-items:center;gap:5px}
.dl-tag{font-size:11.5px;font-weight:600;color:#047857;background:#ECFDF5;border-radius:99px;padding:2px 9px}
.dl-log{margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.dl-log h4{font-size:13px;color:var(--t2);font-weight:600;margin-bottom:10px}
.dl-log .txt{font-size:13.5px;color:var(--t2);white-space:pre-wrap;line-height:1.85}
.dl-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:32px;align-items:start;margin-top:40px}
.dl-side{display:flex;flex-direction:column;gap:14px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 18px 16px}
.side-card h4{font-size:13.5px;font-weight:600;margin-bottom:10px;display:flex;align-items:center;gap:7px}
.side-card h4::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--primary)}
.side-card p,.side-card li{font-size:13px;color:var(--t2);line-height:1.8}
.side-card ul{margin:0;padding-left:16px}
.side-card li{margin-bottom:4px}
.side-card .kv{display:flex;justify-content:space-between;gap:10px;font-size:13px;padding:5px 0;border-bottom:1px dashed #EEF2F7}
.side-card .kv:last-child{border-bottom:0}
.side-card .kv b{font-weight:500;color:var(--t1)}
@media(max-width:980px){
  .dl-grid{grid-template-columns:1fr;gap:24px}
  .dl-side{order:-1}
}

.page > .wrap > .prose,
.page > .wrap > h1,
.page > .wrap > .lead{max-width:880px;margin-left:auto;margin-right:auto}
.page > .wrap > .lead{max-width:880px}
.page > .wrap > .form-card{margin-left:auto;margin-right:auto}